Condenser for refrigerating apparatus



Oct. 6, 1931. c, c SPREEN 1,825,760

CONDENSER FOR REFRIGERATING APPARATUS Filed June 3, 1927 Charles [.Epraan Invan'fnr F1 5 by MQM Patented Oct. 6, 1931 UNITED STATES'PATENT OFFICE CHARLES C. SPREEN, OF DETROIT, MICHIGAN, ASSIGNOR TO KELVINATOR CORPORA- TION, F DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN CONDENSER FOR REFRIGERATING APPARATUS Application filed 'June 3, 1927. Serial No. 196,300.

This invention relates to mechanical refrigerating apparatus, and more particularly to condensers therefor.

An object of my invention is to provide a condenser in which gaseous refrigerant Wlll be quickly and eiiiciently transformed to liquid refrigerant by the circulat on of an.

. A further object of my invention 1 s to efiiciently condense gaseous refrigerant 1n a me- 3 chanical refrigerating apparatus by the provision of a condenser in which the gaseous refrigerant circulates until condensed whereupon it falls by gravity into the condenser reservoir.

Other objects of the invention, more or less incidental or ancillary to the foregoing will appear in the following description which sets forth in connection with the accompanying drawings a preferred embodiment of the invention.

In the accompanying drawings:

Figure 1 is a plan view of refrigerating apparatus in which my invention 1s 1ncorpo rated.

Figure 2 is a front elevation of the same.

Figure 3 is a front elevation of a modified 2 form of condenser.

Referring now to the drawings by characters of reference, 10 represents a support up 50 on which mechanical refrigerating mechanism with which my invention is incorporated is mounted. A drive motor 14 and a compressor 13 are arranged in spaced relation upon 1 the rear side of the support 10 and a drive .35 belt 15 extends around the pulley 24 on the motor shaft and the fan pulley wheel 9 which is fixed to the compressor crank shaft 8. An air circulating fan 23 is secured to the end of the motor drive shaft and projects beyond the 4a belt driven pulley 24.

A refrigerant condenser structure is mounted upon' the support 10 in spaced relation and parallel with the fan 23 so that the air circulated by the fan will be blown against the condenser structure to absorb heat from the refrigerant therein. The condenser structure consists of a vertically extending header 12 which serves as a reservoir for the condensed refrigerant, and con (lensing tube sections 21 which are preferably substantially circular in form. The ends of the circular condensing tubes are secured to opposite sides of the Vertically extending header and are arranged in open communication with the interior of the header. Thecircular condensing tubes are preferably of different diameters and extend in a single vertical plane parallel to the fan 23 and the ends of the tube sections are preferably in align ment. preferably provided with spiral fins 22 in order to increase the heat transfer capacity thereof. p

The condenser header is provided with a connection 11 in its upper end to which a conduit 17 is connected." The conduit 17 is also connected to the outlet 16 of the compressor, and serves to conduct compressed refrigerant from the compressor into the upper portion of the condenser header. An outlet connec- The condensing'pipe sections are tion 19 leads from adjacent the bottom of the v condenser header and a conduit 20 extends pansion apparatus (not shown). The refrigerating apparatus herein illustrated, with the exception of the condenser structure, is of the conventional compressor-condenserevaporator type and a description of the cycle of operation of such a system is not deemed necessary to clearly understand this invention.

In Figure 3,'illustrating the modified form of condenser structure, the header 12 is similar to that previously described but the condensing pipe sections 31 are formed to extend in a semi-circle and the ends thereofv are attached to opposite sides of the header. It necessarily shows that with this modified form of condenser structure that the header 12 must be considerably elongated relative to that employed when the condensing tubes are substantially circular;

It will be seen that the compressed gaseous refrigerant isintroduced into the upper portion of the vertically extending header and will circulate in the condensing tube sections until condensed, whereupon the liquid refrigerant will flow by gravity into the lower portion of the header which serves as a reservoir for the liquid refrigerant. The condensing tube sections are spaced apart and cover a large area Within which air is circulated by the fan 23 so that the gaseous refrigerant is quickly and eificiently condensed.

Various changes can be made in the construction of the apparatus herein described without departing from the spirit of my invention and the scope of What is claimed.

What I claim is: I v

1. An air cooled refrigerant condenser C0111- prising a vertically extending header for dis tributing gaseous refrigerant and storing con densed refrigerant, and condenser tube sections each having their ends communicating with and secured on opposite sides of and to the upper portion of said header, said tube sections being arranged to permit compressed refrigerant to flow therein from said header and to flow by gravity back into said header when condensed.

2. An air cooled refrigerant condenser comprising a plurality of curved, concentrically disposed condensing tube sections extending substantially in a vertical plane, and a header extending intermediate the ends or each of said tube sections, the ends of said tube seetions being in open coinnnlnication with, and secured to, said header.

3. An air cooled refrigerant condenser eon:- prising a header and tube sections secured together in open communication, said header and tube sections being arranged to permit gaseous refrigerant from the Compressor to flow sulistantially in circles and to drain by gravity into the bottom of said header when condensed.

4. An air cooled refrigerant condenser coinprising a vertially extending header, and a plurality of concentrically disposed tube sections each having their ends secured to opposite sides of said header and in open communication therewith.

An air cooled retrigerant condenser comprising a header and tube sections secured together in open communication, said tube sections being bent into circular form and extending in a vertical plane, said header and tube sections being arranged to permit gaseous refrigerant to How substantially in eireles while being condensed and to dra in by grai'i ly into the bottom of said header when eondensed.

in testimony whereof I. hereunto afiir: n signature. 

